You should be able to create an OTBI analysis for the last six months of usage. Keep in mind this would only return usage for otbi analysis and BIP reports are excluded from this. There is reporting

I think these links exist within many different functional areas

https://docs.oracle.com/en/cloud/saas/procurement/24b/faopb/OTBI-Performance-Real-Time-SA-23.html#OTBI_Performance_Real_Time_SA_23_d1e1959

https://docs.oracle.com/en/cloud/saas/procurement/24b/faopb/OTBI-Usage-Real-Time-SA-24.html#OTBI_Usage_Real_Time_SA_24_d1e2194
Description

Analyze six months of subject area and analysis usage trends and patterns with a simpler and lighter-weight selection of OTBI usage metrics, including for example user, report and subject area usage patterns. Historical data older than six months is purged each week.

Here is what you can do for BIP report usage.
https://www.oracle.com/technetwork/middleware/bi-publisher/wp-fusionbipaudit-5459609.pdf